[BAEL-3936] Initial commit

persistence-modules/java-jpa-2/src/main/java/com/baeldung/jpa/unrelated/entities/Cocktail.java

@@ -0,0 +1,84 @@
+package com.baeldung.jpa.unrelated.entities;
+
+import org.hibernate.annotations.NotFound;
+import org.hibernate.annotations.NotFoundAction;
+
+import javax.persistence.*;
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+@Table(name = "cocktails")
+public class Cocktail {
+    @Id
+    @Column(name="cocktail_name")
+    private String name;
+
+    @Column
+    private double price;
+
+    @Column(name="category")
+    private String category;
+
+    @OneToOne
+    @NotFound(action = NotFoundAction.IGNORE)
+    @JoinColumn(name = "cocktail_name",
+            referencedColumnName = "cocktail",
+            insertable = false,
+            updatable = false,
+            foreignKey = @javax.persistence.ForeignKey(value= ConstraintMode.NO_CONSTRAINT))
+    private Recipe recipe;
+
+    @OneToMany
+    @NotFound(action=NotFoundAction.IGNORE)
+    @JoinColumn(name = "cocktail",
+            referencedColumnName = "cocktail_name",
+            insertable = false,
+            updatable = false,
+            foreignKey = @javax.persistence.ForeignKey(value= ConstraintMode.NO_CONSTRAINT))
+    private List<MultipleRecipe> recipeList;
+
+    public Cocktail() {
+    }
+
+    public Cocktail(String name, double price, String baseIngredient) {
+        this.name = name;
+        this.price = price;
+        this.category = baseIngredient;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    public String getCategory() {
+        return category;
+    }
+
+    public Recipe getRecipe() {
+        return recipe;
+    }
+
+    public List<MultipleRecipe> getRecipeList() {
+        return recipeList;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Cocktail cocktail = (Cocktail) o;
+        return Double.compare(cocktail.price, price) == 0 &&
+                Objects.equals(name, cocktail.name) &&
+                Objects.equals(category, cocktail.category);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, price, category);
+    }
+}

persistence-modules/java-jpa-2/src/main/java/com/baeldung/jpa/unrelated/entities/MultipleRecipe.java

@@ -0,0 +1,65 @@
+package com.baeldung.jpa.unrelated.entities;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import java.util.Objects;
+
+@Entity
+@Table(name="multiple_recipes")
+public class MultipleRecipe {
+    @Id
+    @Column(name="id")
+    private Long id;
+
+    @Column(name="cocktail")
+    private String cocktail;
+
+    @Column(name="instructions")
+    private String instructions;
+
+    @Column(name="base_ingredient")
+    private String baseIngredient;
+
+    public MultipleRecipe() {}
+
+    public MultipleRecipe(Long id, String cocktail, String instructions, String baseIngredient) {
+        this.baseIngredient = baseIngredient;
+        this.cocktail = cocktail;
+        this.id = id;
+        this.instructions = instructions;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getCocktail() {
+        return cocktail;
+    }
+
+    public String getInstructions() {
+        return instructions;
+    }
+
+    public String getBaseIngredient() {
+        return baseIngredient;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        MultipleRecipe that = (MultipleRecipe) o;
+        return Objects.equals(id, that.id) &&
+                Objects.equals(cocktail, that.cocktail) &&
+                Objects.equals(instructions, that.instructions) &&
+                Objects.equals(baseIngredient, that.baseIngredient);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, cocktail, instructions, baseIngredient);
+    }
+}

persistence-modules/java-jpa-2/src/main/java/com/baeldung/jpa/unrelated/entities/Recipe.java

@@ -0,0 +1,48 @@
+package com.baeldung.jpa.unrelated.entities;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import java.util.Objects;
+
+@Entity
+@Table(name="recipes")
+public class Recipe {
+    @Id
+    @Column(name = "cocktail")
+    private String cocktail;
+
+    @Column
+    private String instructions;
+
+    public Recipe() {
+    }
+
+    public Recipe(String cocktail, String instructions) {
+        this.cocktail = cocktail;
+        this.instructions = instructions;
+    }
+
+    public String getCocktail() {
+        return cocktail;
+    }
+
+    public String getInstructions() {
+        return instructions;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Recipe recipe = (Recipe) o;
+        return Objects.equals(cocktail, recipe.cocktail) &&
+                Objects.equals(instructions, recipe.instructions);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(cocktail, instructions);
+    }
+}

persistence-modules/java-jpa-2/src/main/resources/META-INF/persistence.xml

@@ -162,5 +162,26 @@
                       value="false" />
         </properties>
     </persistence-unit>
-
-</persistence>
+    
+    <persistence-unit name="jpa-h2-unrelated-entities">
+        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
+        <class>com.baeldung.jpa.unrelated.entities.Cocktail</class>
+		<class>com.baeldung.jpa.unrelated.entities.Recipe</class>
+		<class>com.baeldung.jpa.unrelated.entities.MultipleRecipe</class>
+        <exclude-unlisted-classes>true</exclude-unlisted-classes>
+        <properties>
+            <property name="javax.persistence.jdbc.driver"
+                      value="org.h2.Driver" />
+            <property name="javax.persistence.jdbc.url"
+                      value="jdbc:h2:mem:test" />
+            <property name="javax.persistence.jdbc.user" value="sa" />
+            <property name="javax.persistence.jdbc.password" value="" />
+            <property name="hibernate.dialect"
+                      value="org.hibernate.dialect.H2Dialect" />
+            <property name="hibernate.hbm2ddl.auto" value="create" />
+            <property name="show_sql" value="true" />
+            <property name="hibernate.temp.use_jdbc_metadata_defaults"
+                      value="false" />
+        </properties>
+    </persistence-unit>
+</persistence>